Hand-held refractometer



FIG. 1 is a top plan view of a hand-held refractometer showing a preferred embodiment of my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a bottom plan view of a hand-held refractometer showing a second embodiment of my new design; and,

FIG. 8 is a left side elevational view thereof.

The top plan, right side elevational, rear elevational, and front elevational views of the second embodiment are the same as those of the preferred embodiment.

FIG. 9 is a top plan view of a hand-held refractometer showing a third embodiment of my new design;

FIG. 10 is a bottom plan view thereof;

FIG. 11 is a right side elevational view thereof;

FIG. 12 is a left side elevational view thereof; and,

FIG. 13 is a front elevational view thereof.

The rear elevational view of the third embodiment is the same as that of the preferred embodiment. 

The ornamental design for a hand-held refractometer, as shown and described. 